<template>
  <div class='sub-category'>
    <div class="container">
      <!-- 面包屑 -->
      <SubBread />
      <!-- 筛选框 -->
      <SubFilter />
      <!-- 测试复选框 -->
      <!-- <XtxCheckbox v-model="isAll"/> -->
      <div class="goods-list">
        <!-- 排序 + 列表 -->
         <SubSort />
         <!-- 数据 -->
        <ul>
          <li v-for="goods in goodsList" :key="goods.id" >
            <GoodsItem :goods="goods" />
          </li>
        </ul>
        <!-- 加载 -->
       <XtxInfiniteLoading :loading="loading" :finished="finished" @infinite="getData" />
      </div>
    </div>
  </div>
</template>

<script>
import SubSort from './components/subSort.vue'
import SubFilter from './components/SubFliter.vue'
import SubBread from './components/SubBread.vue'
import GoodsItem from './components/CategoryGoods.vue'
import { ref,watch } from 'vue'
import { useRoute } from 'vue-router'
import {findSubCategoryGoods} from  '@/api/category'
export default {
  name: 'SubCategory',
  components: { SubBread,SubFilter,SubSort,GoodsItem},
  setup(){
     const route = useRoute()

    const loading = ref(false)
    const finished = ref(false)
    const goodsList = ref([])
    // 查询参数
    let reqParams = {
      page: 1,
      pageSize: 20
    }
    // 获取数据函数
    const getData = () => {
      loading.value = true
      reqParams.categoryId = route.params.id
      findSubCategoryGoods(reqParams).then(({ result }) => {
        if (result.items.length) {
          goodsList.value.push(...result.items)
          reqParams.page++
        } else {
          // 加载完毕
          finished.value = true
        }
        // 请求结束
        loading.value = false
      })
    }

    // 切换二级分类重新加载
    watch(() => route.params.id, (newVal) => {
      if (newVal && route.path === ('/category/sub/' + newVal)) {
        goodsList.value = []
        reqParams = {
          page: 1,
          pageSize: 20
        }
        finished.value = false
      }
    })

    return { loading, finished, goodsList, getData }
  
  }
  
  
}
</script>
<style scoped lang='less'>
.goods-list {
  background: #fff;
  padding: 0 25px;
  margin-top: 25px;
  ul {
    display: flex;
    flex-wrap: wrap;
    padding: 0 5px;
    li {
      margin-right: 20px;
      margin-bottom: 20px;
      &:nth-child(5n) {
        margin-right: 0;
      }
    }
  }
}

 
</style>